/*
Copyright 2011 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package com.google.rsm.core;

/**
 * Interface for a callback provided to {@code
 * GenericStateMachine}. This callback is called when a specified
 * combination of state and event occur.
 *
 * @author arunabhaghosh@google.com (Arunabha Ghosh)
 */
public interface EventCallback {

  /**
   * Called to inform about a predefined event being
   * received. Although any exceptions thrown in the run method will
   * be caught and logged, its better to avoid throwing exceptions in
   * the run method.
   *
   * @param event the event which caused the callback
   */
  public void run(Event event);
}
